Over the last several years it has been reported extensively in the literature that chloride induced corrosion of high temperature surfaces in Waste to Energy (WTE) boilers is one of the most costly problems in the industry. This problem can result in replacement of superheater pendents as often as annually in some units or the costly use of higher alloyed materials to either shield the metal surfaces or serve as replacement tube material. The cost-effectiveness of the replacement alloys has not been proven in many cases and therefore the industry has been looking for alternative solutions to evaluate. This paper will address the evaluation of chemical solutions to the problem and also a novel method for measurement of corrosion rates in the high temperature flue gas near WTE superheater pendents.

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